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TBM microwave stress relief device and application for rockburst prevention and treatment

A stress release and microwave technology, applied in mining equipment, earthwork drilling, tunnels, etc., can solve the problems of insufficient stress release, slow speed, and insufficient prevention of rockbursts

Active Publication Date: 2017-05-31
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is not only slow, but sometimes it is not enough to prevent rockburst due to insufficient stress release, which requires adding the function of pre-splitting rock mass on the basis of stress release holes

Method used

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  • TBM microwave stress relief device and application for rockburst prevention and treatment
  • TBM microwave stress relief device and application for rockburst prevention and treatment
  • TBM microwave stress relief device and application for rockburst prevention and treatment

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Embodiment Construction

[0024] Such as figure 1 As shown, a microwave stress release device on a TBM for rockburst prevention and control, the TBM can be an open or shield type full-face rock boring machine, which is a continuous operation of rock breaking, slag removal and support Comprehensive mechanical equipment; an axial transmission screw 10 is arranged in the TBM frame 9, and a microwave cracking system is slidably connected to the transmission screw 10, and a microwave launching rod 2 is arranged at the end of the microwave cracking system; at the end of the TBM frame 9 There is a TBM cutter head 1 at the bottom, and a through hole is arranged on the TBM cutter head 1. The microwave fracturing system slides along the transmission screw 10, and the microwave emitting rod 2 protrudes from the through hole to send microwaves into the drilled rock.

[0025] The structure of the microwave fracturing system is that the output port of the microwave source 8 is sequentially connected to the circulato...

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Abstract

The invention relates to a TBM microwave stress relief device and application for rockburst prevention and treatment. According to the structure of the TBM microwave stress relief device, an axial transmission lead screw is arranged in a TBM rack, the transmission lead screw is in slide connection with a microwave fracturing system, and a microwave transmitting bar is arranged at the tail end of the microwave fracturing system; a TBM cutterhead is arranged at the end of the TBM rack, a through hole is formed in the TBM cutterhead, the microwave fracturing system slides along the transmission lead screw, and the microwave transmitting bar stretches out of the through hole and sends microwaves into drilled rock. The device and application aim to break through the limit that a TBM cannot cope with extremely powerful or powerful rockburst when tunneling a deep tunnel, before TBM hob work, microwave energy is used for carrying out microwave radiation on advance boreholes to presplit the borehole surrounding rock so as to relieve stress, and the purpose of rockburst prevention in the deep tunnel tunneling of the TBM is achieved.

Description

technical field [0001] The invention relates to a microwave stress release device on a TBM for rockburst prevention and its application, and is mainly suitable for deep-buried high-stress tunnels such as water conservancy and hydropower, transportation and mines with strong rockburst and extremely strong rockburst risks excavated by TBM middle. Background technique [0002] Extremely strong or strong rockburst risks are often encountered during the excavation of deep hard rock or high-stress tunnels such as water conservancy and hydropower, transportation and mines. When the high strain energy accumulated in the rock body is released suddenly, it will cause strong damage to the surrounding rock, which will cause great harm to the construction personnel and equipment on site. At present, there are two main ways to control rockburst at home and abroad: the first is to reduce the energy accumulated in the rock mass, such as stress relief blasting, high-pressure water injection...

Claims

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Application Information

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IPC IPC(8): E21D9/087E21D9/11
CPCE21D9/11
Inventor 冯夏庭李元辉卢高明张希巍温建华郑帅孙健羿健卓
Owner NORTHEASTERN UNIV
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